33890

Appears in sequences

• a(n) = floor(a(n-1)/2) + a(n-2) with a(0)=1, a(1)=2.at n=42A064650
• Erroneous version of A006758.at n=10A195741
• Construct sequences P,Q,R by the rules: Q = first differences of P, R = second differences of P, P starts with 1,3,9, Q starts with 2,6, R starts with 4; at each stage the smallest number not yet present in P,Q,R is appended to R. Sequence gives P.at n=52A225385
• Expansion of (G(-x) / chi(-x))^2 in powers of x where chi() is a Ramanujan theta function and G() is a Rogers-Ramanujan function.at n=33A261866
• a(n) = n^3 + (n+1)*(n+2).at n=32A270109
• Numbers k such that k * 19^k - 1 is prime.at n=2A299382
• Expansion of g^3/(1 - x^2*g), where g = 1+x*g^4 is the g.f. of A002293.at n=6A391102